MAORY science preparation status

MAORY is the MCAO module for the ELT. It feeds MICADO and a still to be defined second port instrument. The ”Science Operation” Working Group of MAORY focuses the activity on the simulation of the science cases proposed for the instrument, deriving in this way the achievable performance in different observing conditions, as can be the case of a crowded globular cluster or an almost star-empty frame on a high-z target. In this paper, we discuss the recent activities of the WP focusing on the numerical simulations environment we built and on the contribution to the Operational Concept Description of MAORY.